package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

@Component
public class SpringSecurityUserService implements UserDetailsService {

    @Reference
    private UserService userService;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

        //获得元素(根据名字)
        User user = userService.findByUsername(username);

        if(user == null){
            return null;
        }

        Set<Role> roles = user.getRoles();
        List<SimpleGrantedAuthority> list = new ArrayList();
        for (Role role : roles) {
            String roleKeyword = role.getKeyword();
            list.add(new SimpleGrantedAuthority(roleKeyword));

            Set<Permission> permissions = role.getPermissions();
            for (Permission permission : permissions) {
                String permissionKeyword = permission.getKeyword();
                list.add(new SimpleGrantedAuthority(permissionKeyword));
            }
        }
        org.springframework.security.core.userdetails.User securityUser = new org.springframework.security.core.userdetails.User(username,user.getPassword(),list);
        return securityUser;
    }
}
